Ozonator.



mama PATENTED 001. 27, 1903. J. MILLER & 1-". M. ASHLEY. QZONATOR.

APPLICATION FILED DEC. 19, 1902.

N0 MODEL. 2 SHEETS SHEET l.

lmw m 1m ATTORNEYS WSTN ESSES UNITED STATES I JOSEPH MILLER AND FRANK M. ASHLEY, OF 'NEW YORK, N. Y., ASI GNORS Patented October 2?, 1903.,

PAT NT FFICE.

OF ONE-THIRD TO ISAAC L. MILLER, OF PATERSON. NEW JERSEY.

OZONATOR.

SPECIFICATION forming part of Letters Patent No. 742,341, dated'october 27, 1903. Application filed December 19, 1902. Serial No. 135,869. (No model.)

To all whom it may concern:

Be it known that we, JOSEPH MILLER and.

FRANK M. ASHLEY, citizens of the United States, residing in New "York city, in the county and'State of New York, have invent-- ed certain new and useful Improvements in Ozonators; and we do'hereby declare the following to be' a full, clear, and exact description of the invention, such as will enable others .skilled in the art to which it appertains to .make and. use the same, reference being had to the accompanying drawings, and to characters' of reference marked thereon, which form a part of this specification.

Notwithstanding the many and, valuable uses for which the gas ozone is available it electrically in any appreciable quantities,

even experimentally, must be such as suppresses to the minimum the evolution of heat. Instead, for instance,.of employing the direct spark discharge of a Ruhmkorfi coil it has been proposed to accomplish the desired effect by means which would convert the spark discharge into what is known as the silent discharge, thus conserving to the production of ozone energy which would otherwise go to form the spark.

The present invention has for its object the production of an apparatus in' which ozone may be generated through the medium of the silent discharge under conditions which shall be highly conducive to an abundant productionofozoner Y The preferredform of the ozone-producing part proper of our apparatus is a device having the essential features structurally, at

least, of an ordinary Leyden jar, said device consist-ingot a dielectricbody, preferably in the form of a tube closed at one end, and electrodes,one of which covers the extremity of the closed end of the tube and the other of which covers the inside surface of the tube and is turned back at the tubes mouth, soas to externally embrace a part of the mouth portion of the tube, being, moreover, at this point in such spaced relation to the electrode at the tubes closed end as to at least prevent .the formation of the undesirable spark discharge; but inasmuch as good results have been obtainedby' simply disposing the electrodes in contact 'with a dielectric body in such relation that while being spaced sufficiently to at leastvprevent the formation of the spark discharge they are not spaced greater than the distance corresponding to the surface course on said body of the silent discharge between saidelectrodes we do not wish to be necessarily limited to the said preferred form of the invention.

Y Our invention will be found fully illustrated in the accompanying drawings, where- Figure 1 is a longitudinal vertical sectional view of one form of the apparatus. Fig. 2 is a longitudinal sectional view of .a detail thereof, and Fig.3 is a longitudinal sectional View of a modification of the apparatus.

In the present instance the silent-discharge medium consists of a vial-shaped body a, of

vitreous substance, preferably glass, whose closed end bis covered by a thin metallic layerc-such as tin-foil, amalgam, or the like-.

forming an electrode, while its entire inner surface is covered by a similar metallic layer (1, which is extended-out of the. mouth e of said vial-shaped body and islaid back so as to surround the mouth portion of the body, as at f, forming the other electrode. The surface measurement of the body a, should be as large as practicablea -the larger the better-exceptthat relatively the distance between the adjoini ig edgesjof themetallic layer 0 and the portion f "of the inside metallic layer should 'notb'e too. limited.

g represents metallic terminals, which'in that form of the "apparatus se'e'n'in Fig. ;1 carry at their adjoining; endsso'ckets h, in

which arejarrangedgsprings The silent "too S ed mouth of body it is provided with a tightlythe head Z.

discharge device, already described, is fixed in these sockets in the manner shown in Fig. 1. When in pos.tiou, one spring a bears against the closed end of the silent-dischargev device, while the other spring bears against a diskj, which takes against the open end of said device. The sockets h are formed of conducting material and are preferably of such size as to snugly fit the ends of the silentdischarge device. i

As is usual in apparatus of this nature, the field immediately surrounding the ozone-producing medium is inclosed, so as to prevent the produced ozone from becoming dissipated into the atmosphere and so that, if desired, only pure oxygen may be acted upon. Ve therefore provide a casing, which is preferably cylindrical in general form and comprises as its principal elements a cylinder k and heads 1, drawn againstthe ends of the cylinder by bolts m. With the double ob ject of having the cylinder 7a of non-conducting material and of permitting visual inspection of the interior of the apparatus this cylinder is preferably made of transparent glass. The bolts are made of fiber or some other suitable non-conducting material. The heads I, which are substantially of truncated conical form, have their outer or smaller ends closed by insulating-010s u res n, securely fitted thereto and carrying the terminate g. Each of these is inwardly conical, so as to insure against short-circuiting between the terminal 9 and I The hea'dsl are each provided with 'a suitably-closured' opening 0, designed to permit access by the hand to the interior,

and with a duct 19. One of the ducts may be provided with a petc'ock g, which constitutes the ad'mission port to the above-described ozone-generating chamber r, while the other may communicate with the cylinder of a suitable pump s, which is adapted to draw the ozone. from the producing-chamber 'r and force it past a valve 25 to the reservoir there for. The various fittingsywhich; go to form the chamber 1" are made so that; their joints are hermetic. I I 71 The accessories of the silent-discharge device may be as in Fig. 3. The chamber in whic thedevice is placed may be formed of a transparent bulbular-body u, having one end formed with a threaded opening 1) for the admission of the silent-discharge device and the other end formed with a seat 20, adapted to'receive one end of said device. "The threadfitting screw-plug 00, through which extends one of the terminals'g, whose inner end is fixed to a flanged hollowcap y, adapted to receive the adjacent (closed) end of the silentdischarge device, a spring a being-interposed to hold the silent-discharge device steady. The inside of each end portion of the body it is lined, as at 1, with a coating of tin-foil or the like, that adjacent the-mouth end of the bodyit being laid aroundaniinternal shoulder 2 of the latter, so that theflanged portion of the cap may form a good electrical contact therewith when the plug it is screwed against it. The terminal g at the closed end of the body 11 has electrical con tact with the coating of tin-foil 1. Thus the bulbular body it serves not only the function of a confining chamber for the silent discharge device, but an auxiliary silent-discharge medium. Instead of'ozonizing the air or oxygen as it moves past and in proximity to the silent-discharge device it is found perhaps better to charge the chamber containing the silentdischarge device with several atmospheres of the air or oxygen to be acted upon, since it is possible to act upon considerably more than one atmosphere of the air or oxygen. a port 3, communicating both with the discharge 4 from a pump 5 and with a discharge 6 to the ozone reservoir, avalve 7, having permit the inflow of air or oxygen, then oppose it to an abutment 8 until the chargeof air orras in chamber u is ozouized, and then connect it with discharge-port 6, when the To this end the body to mayhaveozonizing is completed. The terminalsgbeing connected with the terminals of aRuhmkorif coil or other similar higlrpotential me dium,the electricai charge finds its way as-a silent discharge across the surface of the nonconducting medium between-the coatings atits end portions, ozonizing the ambient air or oxygen, whichever is brought into efie'ciive proximity to the silent-discharge device.

Having thus fully described on r. invention what we claim as new, and desire to secure by Letters Patent, is

1. In an ozone-producing combination of a dielectric bodyiand two elec trodes arranged in contact with the surface of .said body at a distance apart greater than the sparking distance therebetween but less than the distance .correspondingto the surface course on said body of silent discharge beapparatus, the.

tween said electrodes, substantially as dey scribed. p I 2. In an ozone-producing apparatus the combination of a dielectric body and two layerlike electrodes arrangedin laminated contact] with the su-rface'of said body at a distance apart greater than ,the sparking distance a I 20 responding to the surface course on said body of silent discharge between-said electrodes,

therebetween but less than the distance cor substantially as described. Y l

. 3. In an ozone-producing apparatus, the combination of a dielcctricdayer-like body and two layer-like electrodes arranged, in lam inated contact with the same face or surface of said body at a distance apart greater than the sparking-distance therebetween but less than the distance corresponding to the surfacecourse on said body of silentdischarge between said electrodes, substantially asde scribed. v I

4. In an ozone-producing apparatus, the

combination of a tubular dielectric body and two band-like electrodes arranged in laminated contact with the surface of said body at a distance apart greater than the sparking distance therehetween but less than the distance corresponding to the surface course on said body of silent discharge between said electrodes, substantially as described.

5. In an ozone-producing apparatus, the

combination of a dielectric tubular body closed at one end, a cap-shaped electrodereceiving and lying in laminated contact with the closedend ofsaid tube and another and layer-like electrode lining said tubular body and eXtendingout of and surrounding the mouth portion of said tube, substantially as described. s

In testimony thatwe claim the foregoing We have hereunto set our hands this 10th day of December, 1902.

JOSEPH MILLER. FRANK M. ASHLEY..

Witnesses:

JOHN W. STEWARD, J. B. NEWTON. 

